CVE-2017-16654

An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The Intl component includes various bundle readers that are used to read resource bundles from the local filesystem. The read() methods of these classes use a path and a locale to determine the language bundle to retrieve. The locale argument value is commonly retrieved from untrusted user input (like a URL parameter). An attacker can use this argument to navigate to arbitrary directories via the dot-dot-slash attack, aka Directory Traversal.

• CWE-22

• https://github.com/symfony/symfony/pull/24994Issue Tracking, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/03/msg00009.htmlThird Party Advisory
• https://symfony.com/blog/cve-2017-16654-intl-bundle-readers-breaking-out-of-pathsIssue Tracking, Vendor Advisory
• https://www.debian.org/security/2018/dsa-4262Third Party Advisory
• https://github.com/symfony/symfony/pull/24994Issue Tracking, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/03/msg00009.htmlThird Party Advisory
• https://symfony.com/blog/cve-2017-16654-intl-bundle-readers-breaking-out-of-pathsIssue Tracking, Vendor Advisory
• https://www.debian.org/security/2018/dsa-4262Third Party Advisory

Published

Aug 6, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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